Prechecks.sh shell script example for sysadmin

Someone from my team asked me to write something which will create a report before any SAN uplift and one for post checks also.

and I started adding bits to it as below,

# cat prechecks.sh

#!/usr/bin/ksh

clear

echo "\n"

chk(){

if [ $1 -ne 0 ]

then

echo "$clstr cluster is not installed here\n"

else

echo "$clstr cluster is installed here,Please consider"

fi

}

echo " Script to run before going for SAN uplift just to understand all configuration"

echo "\tSERVER NAME :\t`uname -n`\n\n"

echo "\t\t\tTOTAL VG's  :\t\n`lsvg`\n\n"

echo "\t\t\tTATAL ACTIVE VG's:\t\n`lsvg -o`\n\n"

for i in `lsvg -o`

do

echo "\t\t\tDETAILED INFO OF $i:\n `lsvg $i`\n\n"

for j in `lsvg -p $i|grep hdisk|awk '{print $1}'`

do

#echo "\t\t\tDETAILED INFO OF $i:\n `lsvg $i`\n\n"

echo "\t\t\tATTRIBUTES OF $j:\n"

lsattr -El $j|egrep -e 'queue_depth|reserve_policy'|awk '{print $1": " $2}'

echo "\n\n"

done

done

clstr="HACMP"

/usr/es/sbin/cluster/utilities/clRGinfo 2>/dev/null

ar=`echo $?`

chk $ar

#echo "\n"

clstr="GPFS"

/usr/lpp/mmfs/bin/mmlscluster 2>/dev/null

ar=`echo $?`

chk $ar

exit 0

Hope this will help you!